<template>
  <div class="login">
    <section class="form_container">
      <div class="manage_tip">
        <span class="title">chen在线后台管理系统</span>
        <el-form :model="loginUser" :rules="rules" ref="loginForm" label-width="80px" class="loginForm">
          <el-form-item label="用户名" prop="name">
            <el-input v-model="loginUser.name" placeholder="请输入用户名"></el-input>
          </el-form-item>
          <el-form-item label="邮箱" prop="email">
            <el-input v-model="loginUser.email" placeholder="请输入邮箱"></el-input>
          </el-form-item>
          <el-form-item label="密码" prop="password">
            <el-input type="password" v-model="loginUser.password" placeholder="请输入密码"></el-input>
          </el-form-item>
          <el-form-item>
            <el-button type="primary" class="submit_btn" @click="submitForm('loginForm')">登陆</el-button>
          </el-form-item>
          <div class="tiparea">
            <p>还没有账号？现在<router-link to='/register'>注册</router-link></p>
          </div>
        </el-form>
      </div>
    </section>
  </div>
</template>

<script>
import jwt_decode from 'jwt-decode';
export default {
  name: "login",
  components: {},
  data() {
    return {
      loginUser: {
        name: "",
        email: "",
        password: "",
      },
      rules: {
        name: [
          { required: true, message: "用户名不能为空", trigger: "blur" },
          { min: 2, max: 30, message: "长度在2到30字符之间", trigger: "blur" }
        ],
        email: [
          {
            type: "email",
            required: true,
            message: "邮箱格式不正确",
            trigger: "blur"
          }
        ],
        password: [
          { required: true, message: "密码不能为空", trigger: "blur" },
          { min: 6, max: 30, message: "长度在6到30之间", trigger: "blur" }
        ]
      }
    };
  },
  methods: {
    submitForm() {
      this.$refs["registerForm"].validate(valid => {
        if (valid) {
          this.$axios.post("api/users/login",this.loginUser)
          .then(res=>{
            //token
            //console.log(res)
            const{token}=res.data;
            //存储到ls
            localStorage.setItem("eleToken",token);

            //解析token
            const decoded = jwt_decode(token);
            //console.log(decoded);
            //token存储到vuex中
            this.$store.dispatch("setAuthenticated",!this.isEmpty(decode));
            this.$store.dispatch("setUser",decode);


            this.$router.push("/index")
          });
          //跳转到login页面
          
        } else {
          console.log("error submit!!");
          return false;
        }
      });
    },
    isEmpty(value){
      return(
        value ===undefined ||
        value === null ||
        (typeof value ===" object"&& Object.keys(value).length ===0) ||
        (typeof value === "string"&&value.trim().length === 0)
      );
    }
  }
};
</script>

<style scoped>
.login{
  position: relative;
  width: 100%;
  height: 100%;
  background: url(../assets/bg.jpg) no-repeat center center;
  background-size: 100% 100%;
}
.form_container{
  width: 370px;
  height: 210px;
  position: absolute;
  top: 20%;
  left: 34%;
  padding: 25px;
  border-radius: 5px;
  text-align: center;
}
.form_container .manage_tip .title{
  font-weight: bold;
  font-size: 26px;
  color: #fff;
}
.loginForm{
  margin-top: 20px;
  background-color: #fff;
  padding: 20px 40px 20px 20px;
  border-radius: 5px;
  box-shadow: 0px 5px 10px #cccc;
}
.submit_btn{
  width: 100%;
}
.tiparea{
  text-align: right;
  font-size: 12px;
  color: #333;
}
.tiparea p a{
  columns: #409eff;
}
</style>